Pneumatic tire having sipes including at least three tie-bars

Details Pneumatic tire having sipes including at least three tie-bars Pneumatic tire having sipes including at least three tie-bars

1997-11-14

2000-04-18

Maki, Steven D.

Resilient tires and wheels

Tires, resilient

Anti-skid devices

15220922, 152903, 152DIG3, B60C 1112, B60C 1113, B60C10304

Patent

active

060503130

ABSTRACT:
A pneumatic tire comprises a tread portion which is provided with a plurality of circumferential grooves extending continuously in the tire circumferential direction to axially divide the tread portion into a plurality of land portions, at least one of the land portions is provided with sipes each extending across the full width of the land portion to have a pair of open ends, each of the sipes is provided therein with at least three tie-bars to provide the bottom of the sip with at least three shallow parts in the open ends and therebetween and at least two deep parts between the shallower parts, and the depth (h2) at the shallow parts is set in the range of from 0.2 to 0.8 times the depth (h1) at the deep parts.

REFERENCES:
patent: 2094636 (1937-10-01), Bull
patent: 2302027 (1942-11-01), Havens
patent: 4078596 (1978-03-01), Nakayama et al.
patent: 4471825 (1984-09-01), Kuhn et al.
patent: 5109904 (1992-05-01), Numata et al.
patent: 5287905 (1994-02-01), Caretta et al.
patent: 5355922 (1994-10-01), Kogure et al.
patent: 5388625 (1995-02-01), White
patent: 5766383 (1998-06-01), Hasegawa et al.
patent: 5772806 (1998-06-01), Moriya
patent: 5824169 (1998-10-01), Landers et al.
Translation for Japan 3-14704.

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